4 5. Provide metallic locating wire for all buried PVC pipe. Wire must daylight at each fitting in accordance with City Standards. C. Pipe Laying in Trenches: 1. Inspect pipe and accessories for defects before lowering into trench. 2. Repair or replace any defective, damaged, or unsound pipe. 3. Remove all foreign matter and dirt from the inside of pipe before laying. 4. Carefully lower pipe, fittings, valves, and accessories into the trench with derricks, ropes, and other suitable equipment to prevent damage. 5. Do not dump or drop pipe or accessories into the trench. 6. Lay to lines and grades indicated on the Drawings and specified. a. Closely joint to form a smooth flow line. b. Immediately before placing pipe, check bedding for firmness and uniformity of surface. c. Minimum length of pipe that can be used without exceeding the allowable curvature of pipe shall be determined. d. Maximum curvature of pipe as recommended by the manufacturer. e. Deflection at joint: As recommended by the manufacturer. f. If grade is not shown on Drawings, install pipe at smooth grade between elevations shown to allow drainage of pipe. 7. Utilize implements, tools, and facilities recommended by the manufacturer. 8. Keep inside of pipe clean during and after laying. 9. Close all open ends with watertight expandable pipe plugs for potable water application: a. At the end of each day s operations. b. Whenever pipe ends are left unattended. c. Deposit adequate backfill on pipe to prevent flotation. d. Do not use wood, burlap or other similar temporary plugs. 10. Remove and re-lay any pipe which has floated. 11. Do not lay pipe when: D. Jointing: a. There is water in the trench. b. Trench conditions are unsuitable. c. Weather conditions are unsuitable. 1. Assemble in accordance with the manufacturer s instructions

5 2. Wipe gasket and gasket seat clean before inserting gasket. 3. Lubricate the gasket and the outside of the clean pipe end. 4. Utilize an assembly tool as recommended by the manufacturer to center the sleeve over the pipe end. 5. Force the pipe into the collar. 6. Check gasket location after assembly with a suitable gauge. E. Fittings: a. Pipe shall be marked with a stab depth line to allow visual confirmation of correct installation. b. Gasket locations to be the distance from the sleeve end recommended by the coupling manufacturer for their full circumference. c. If not within the required limits, disassemble and reassemble the joint. 1. Install utilizing standard methods. 2. Lower into trench with rope, cable, chain or other means to prevent damage. 3. Attach rope, cable or chain around the exterior of fittings. Do not attach through the interior of fitting. 4. Carefully connect to pipe or other facility. 5. Check joint to ensure a sound and proper joint. F. Encasement: 1. Provide as indicated on the Drawings or as directed by the Resident Engineer. 2. Suitably support and block pipe and anchor against flotation. G. Corrosion Control: 1. Coat all steel clamp rods, bolts, fittings and other metal accessories used in anchorages or joint harness subject to submergence or contact with the earth and not concrete encased. 2. Apply two (2) coats of coal tar paint to clean, dry metal surfaces. 3. Allow the first coat to dry and harden before applying the second coat. H. Polyethylene Field wrap of all valves, fittings, joints, and connections: 1. Wrap all buried valves, flanges, couplings, fittings, joints and other mechanical pipe connections in two layers of polyethylene encasement per AWWA C105. Extend layers of polyethylene to overlap cement mortar coating (where applicable) and tape edges of polyethylene wrap with at least two circular wraps of PVC tape. I. Direct tapping of PVC not permitted. Saddles are required

6 3.04 FIELD QUALITY CONTROL A. Pressure Test: 1. Test in accordance with AWWA C605 as modified herein. 2. Provide all tools, pumps, fill points, gages, meters, temporary valves and bulkheads, bracing and other equipment required for testing. 3. Conduct the test with the trench completely backfilled. 4. Procedure: 3.05 Disinfection a. Test line in sections of 2,500 feet or less. b. Fill with water and allow to stand under slight pressure for at least 24 hours. c. Expel all air from line. d. Inspect for leakage and repair any leaks. e. Raise the pressure to 220 psi for water mains or 50 psi for drain conduits and hold by water addition for at least 1 hour. f. Allow line to stand for 1 hour without water addition and accurately record the quantity required. 5. If the quantity of water added to the line exceeds the value in Table 3 of AWWA C605, or should leaks otherwise be noted, locate the leaks, rework the line and retest. A. Disinfect all water piping per the requirements of Section 11201, Systems Disinfection and VOC Testing. B. Pipe will be flushed at 5 feet per second for three pipe volumes prior to disinfection. **END OF SECTION**

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